Architectural Land Sub division
In case of creating geometry parametricaly, you can use addons: 

Sverchok (github) -  is a powerful parametric tool for architects, allowing geometry to be programmed visually with nodes. 

Animation nodes - this tool mostly for animation, but maybe it can be also useful for you 

Anyway, you must create your own logic using this addons (or find node trees in internet), so you must study how to create meshes using logic nodes from this addons.